Pyle PDWMG46 Swivel-Jack Transmitter, Universal Standard, Fits All Guitar Connectors (Can be Used Without Mains Supply) Quickly & Easily Adds Wireless Instrument Functionality, Provides Two Different UHF Frequencies Extended Frequency Response Optimized for Guitar & Bass, Includes Free-Standing Receiver & Transmitter Up to 150' Feet Wireless Communication Range, 1/4'' Output (Unbalanced High Z) Audio Connector Jack Fits Angles, Straight or Edge-Mounted Connector Jacks, Batteries Required: (2) 'AA' Batteries